Hosta 'Blue Mammoth' (Plantain Lily) – Hardy Shade Perennial (2L Pot)

Hosta 'Blue Mammoth' is one of the largest hostas, grown for thick, heavily corrugated blue green leaves.

The heart shaped leaves build a bold, architectural mound up to 90cm tall and 120cm across, which makes it a genuine focal point in a shaded bed, under trees or beside water. Tall stems of pale lavender to near white bell flowers follow in summer. It holds the RHS Award of Garden Merit, and the sheer thickness of the leaf gives it useful natural resistance to slug and snail damage.

Supplied as an established plant in a 2 litre pot, ready for moist, humus rich soil or a large container. Keep it out of direct sun, which scorches blue leaved hostas and washes the colour out, and water well through the first season. A spring mulch keeps the roots cool and the weeds down.

Cultural Information

• Common Name: Hosta, plantain lily
• Fully Grown Height and Spread: Up to 90cm tall and 120cm across
• Growth Habit: Clump forming, mounded herbaceous perennial
• Perfect For: Shaded borders, woodland planting, patio containers, ground cover beneath trees
• Foliage: Large, thick, heavily corrugated blue green heart shaped leaves
• Flowering Time: Summer, pale lavender to near white bell shaped flowers
• Planting Position: Partial shade to full shade, including damp ground, and happy in a container
• Soil Type: Moist, humus rich, well drained soil that does not dry out
• Hardiness: Fully hardy in the UK
• Maintenance: Low. Cut the faded leaves away as they die down in autumn and protect the new shoots from slugs and snails in spring. Divide established clumps in spring or autumn.
• Seasonal Interest: Summer
• Type: Hardy herbaceous perennial

Free UK Delivery on Every Order

All orders placed Monday–Thursday before 2pm are packed the next working day and delivered within 24 hours of dispatch.

Example: Order on Monday → packed Tuesday → delivered Wednesday.

Orders placed Friday–Sunday are packed and shipped on Monday. We don't dispatch on weekends to ensure your plants travel fresh.

How Your Plants Arrive
Every plant is individually wrapped in our plastic-free packaging and secured in a custom box designed to keep them upright and protected in transit. If anything arrives damaged, get in touch — we'll replace it.

Returns
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